I'm having problems with controlling page scrolling with my trackpad in iTunes 11.0.4

Question

When I do upward or downward swipes in my "Music" section in particular, my list continues to scroll and scroll even after tapping to stop - never used to do this. It even starts getting away from me when I'm creeping up or down the list. It doesn't do this in my podcasts list which is much shorter - I've got thousands of music files and only hundreds of podcast files. This is making navigation through my music list very difficult and frustrating.
OSX 10.6.8
Model Name:
iMac
  Model Identifier:
iMac8,1
  Processor Name:
Intel Core 2 Duo
  Processor Speed:
2.66 GHz
  Number Of Processors:
1
  Total Number Of Cores:
2
  L2 Cache:
6 MB
  Memory:
4 GB
  Bus Speed:
1.07 GHz
  Boot ROM Version:
IM81.00C1.B00
  SMC Version (system):
1.29f1
  Serial Number (system):
  Hardware UUID:

Answer 1

Have you try the same code on a different clean machine (system.data.dll failing, it might be .net framework mismatch)?
Where exactly is the code failing (which line is throwing the exception?)
It is only failing with a blob?
Arnold